[Properties of Escherichia coli alpha-hemolysin].

SH-reagents (alpha-ethyl maleimide, n-chlor mercuribenzoate, dithioglycolic acid) and hydrogen peroxide induce insignificant changes in the activity of hemolysin. Reducing reagents (2-mercaptoethanol and ascorbate) inhibit hemolytic activity. Cholesterol at a concentration of 4.